The following is an excerpt....
BASICS
Description
- A contagious, superficial, intraepidermal infection occurring prominently on exposed areas of the face and extremities
- Affected patients usually have multiple lesions.
- Cultures positive in >80% cases for Staphylococcus aureus either alone or combined with group A β-hemolytic streptococci; S. aureus more common pathogen since 1990s
- Nonbullous impetigo: Formation of vesiculopustules that rupture, leading to crusting with a characteristic golden appearance; local lymphadenopathy may occur.
- Bullous impetigo: Staphylococcal impetigo that progresses rapidly to small to large flaccid bullae (newborns/young children) caused by epidermolytic toxin release; less lymphadenopathy; <30% of patients
- Folliculitis: Considered by some to be S. aureus impetigo of hair follicles
- Ecthyma: A deeper, ulcerated impetigo infection often with lymphadenitis
- System(s) affected: Skin/Exocrine
- Synonym(s): Pyoderma; Impetigo ...
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